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Part Number

Part Number:
NSN:
NIIN:
Item Name:
SCREW , CAP , HEXAGON HEAD

Definition:

AN EXTERNALLY THREADED FASTENER DESIGNED FOR INSERTION INTO HOLES IN ASSEMBLED PARTS, FOR MATING WITH A PREFORMED INTERNAL THREAD AND FOR TIGHTENING OR RELEASING BY TORQUING THE HEAD. THE THREADED AND UNTHREADED PORTIONS ARE BOTH OF THE SAME NOMINAL DIAMETER OF 0.190 INCH (5 MM) OR LARGER. HEAD DIMENSIONS AND SIZES OF THREADED AND UNTHREADED PORTIONS SHALL CONFORM TO INTERNATIONALLY RECOGNIZED FASTENER STANDARDS. THE THREAD LENGTH BEING THE CONTROLLED DIMENSION, THE GRIP LENGTH IS NOT SPECIFIED. A LOCKING FEATURE MAY BE INCORPORATED IN THE DESIGN OF THE HEAD OR THREADS. EXCLUDES BOLT, MACHINE; BOLT, EXTERNALLY RELIEVED BODY; BOLT, INTERNAL WRENCHING; AND SCREW, CAP, SOCKET HEAD.

CAGE Information

Code Company
00000 ORDNANCE CORPS

Characteristics (Decoded)

MRC Requirements Statement Clear Text Reply
AHYM NOMINAL THREAD DIAMETER 0.625 INCHES
AHYM NOMINAL THREAD DIAMETER 0.625 INCHES
AASA THREAD LENGTH 1.500 INCHES MINIMUM AND 1.688 INCHES MAXIMUM
AASU HEAD HEIGHT 0.378 INCHES MINIMUM AND 0.403 INCHES MAXIMUM
SFTT SURFACE TREATMENT CADMIUM OVERALL OR ZINC OVERALL
CMLP THREAD QUANTITY PER INCH 18
AATB WIDTH BETWEEN FLATS 0.922 INCHES MINIMUM AND 0.938 INCHES MAXIMUM
MDCL MATERIAL DOCUMENT AND CLASSIFICATION SAE GR 8 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
CQHQ MINIMUM YIELD STRENGTH 120000 POUNDS PER SQUARE INCH
AAJF THREAD DIRECTION RIGHT-HAND
CQFM HARDNESS RATING 32.0 ROCKWELL C MINIMUM OVERALL AND 38.0 ROCKWELL C MAXIMUM OVERALL
MATT MATERIAL STEEL OVERALL
THSD THREAD SERIES DESIGNATOR UNF
AAJD THREAD CLASS 2A
AASK HEAD STYLE HEXAGON
STDC SURFACE TREATMENT DOCUMENT AND CLASSIFICATION QQ-P-416,TY 1,CL 3 FED SPEC 1ST TREATMENT RESPONSE OVERALL OR QQ-Z-325,TY 1,CL 3 FED SPEC 2ND TREATMENT RESPONSE OVERALL
CQBC MINIMUM TENSILE STRENGTH 150000 POUNDS PER SQUARE INCH
AASB FASTENER LENGTH 2.000 INCHES NOMINAL

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